Just picked this up (Jan 2019), really wasn’t sure about getting another 4 stroke but couldn’t find a nice 2 stroke and got a great deal on this.
RM-Z 250 parts list and exploded diagrams Jan 2019 Race sag = 95mm, static sag = 41mm, preload length 255mm All damper settings set to stock Valve clearances: Exhaust 0.17 – 0.24mm (0.007 – 0.009″) Actuals Jan 2019: L 0.178mm, R 0.178mm Intake 0.09 – 0.16mm (0.0035 – 0.006″) Actuals Jan 2019: L 0.152mm, R 0.127mm
To Do List
Install new fork protector rings
New U linkage?
New fuel pump?
Oil and filter change
Oiled and installed new air filter
Repaired tear in seat cover
Soldered wires back on to fuel pump
Replaced all linkage bearings
Check valve clearances
Replace upper rear shock bearing
Install new grips
Set all damper settings to stock
Set race sag = 95mm, static sag = 41mm
Stitched rear mudguard with zip ties
Repaired muffler mount
Re-seated front wheel
Replaced handlebars with slightly cut Renthals (stock?)
Saw this on Kijiji and thought it would be good for us all to play with and even for the wife to use as a pit bike at the MX track. Sadly when I got it home I found that most of the stuff I was told about it was not accurate …
“Brand new rear rim and hub assembly” – really, with dirt all over the hub and sprocket, a bent spoke with broken nipple and a dent in the rim???
“Upgraded battery pack” – looks like 4 x 10Ah SLA batteries to me, same as stock, what’s upgraded about it?
“It’s only been ridden about half a dozen times” – it’s 5 years old! And I suppose that in those 12 hours (charge lasts about 2 hours) the rear tire was worn down, and a lot of the stickers fell off???
Also, the rebound adjuster on both the forks AND shock was damaged so they wouldn’t turn, the rear end has been smashed so hard that the mount screw for the rear shock was bent and the bushing trashed, the steel bead in the rear tire was all bent, the front mudguard was snapped in half, there was no air pressure in the forks and the battery cover was under the battery.
Oh well, this all just shows that I should perhaps not be so trusting and do a better job of inspecting stuff before I buy.
Set to work on it. No room in the garage, sat it in the trailer,
After the MaxTakeoff treatment,
The torque on this thing is insane, but being a trials bike, it’s not very fast. You need to be super careful with the throttle response setting and it takes a bit of getting used to especially when riding slowly. It’s really designed for kids 9-12 years old but it is well made with decent components and easily copes with my 5’9″ and 160lbs. I was sold on it after watching this video,
We’re planning on frequent visits to the track this year and I wanted to be able to transport all 4 dirt bikes and keep all the riding gear out of the rain. We rented an open trailer from U-Haul last summer when we went camping but it was only 5’x8′ so could only really fit 3 bikes. I was looking at bigger open trailers but I soon found that I would have to increase my budget or buy brand new from Canadian Tire where I could get interest free equal payments on their credit card. As usual, the budget crept up until I found this 6’x10′ enclosed trailer.
It has some issues but seems to be pretty solid and once I’ve cleared out the shelving, I think we should be able to get 4 bikes in.
To Do List
Attach roof rack half to the A arms at the front
Make container smaller ready for bigger bikes
Install rack at rear to hold bikes instead of door frame
Paint frame again
Swap tires onto new wheels
Find a way to secure the container to the floor – screwed blocks to the floor
Replace side marker lights
Remove sticker residue from back and sides – scraped off with Goo Gone and elbow grease!
Paint new wheels
Find a spare wheel, 205 75 R15 – Picked up 2 for $25 off Kijiji, cleaned up nice
Paint frame underneath and welded door supports – 60% complete
Bought new ratchet tie-downs for front bikes
Make some ramps – made one that locates on bottom door lock
Tidy up wheels – wire brushed and painted
Install new PS tail marker light
Tighten and grease wheel bearings, replace caps
Offer up all 4 dirt bikes
Repair side marker light and install new bulb in left tail light
Install tie-down anchors at front
Install shelf at front
Repair rear door supports – both had come away from the frame at the bottom, found that the screws are 8 point Robertson, removed frame, peeled back the panel and welded some metal brackets on 2 sides to re-attach supports to the frame
Purchase magnetic light
Register trailer and install plate
Obtain more tie-down anchors – 8 for $25 off Kijiji
Fix interior panel at rear
Remove all shelving
Fix wiring for lights – bad joints at the connector
Pick up 2 x padlocks for hitch and door
Sure enough there’s a good bit of room even with all the bikes loaded.
So I made a box to put the toolbox and gas cans in.
YZ250Fw parts list and exploded diagrams Valve clearances: Exhaust 0.17 – 0.22mm (0.0067 – 0.0087″) Actuals Dec2017: L 0.203mm, R 0.178mm Actuals Jun2018: L 0.203mm, R 0.178+mm Actuals Dec2018: L 0.178mm, R 0.178mm Shims: L 1.72mm, R 1.75mm New Shims: L 1.70mm, R 1.73mm Actuals Jan2019: L 0.203mm, R 0.178+mm
Intake 0.10 – 0.15mm (0.0039 – 0.0059″) Actuals Dec2017: L 0.102mm, M 0.102mm, R 0.127mm Actuals Jun2018: L 0.127mm, M 0.127mm, R 0.127mm Actuals Dec2018: L 0.102mm, M 0.127mm, R 0.127mm Shims: L 1.76mm, M 1.73mm, R 1.72mm New Shims: L 1.72mm, M 1.72mm, R 1.70mm Actuals Jan2019: L 0.152mm, M 0.127mm, R 0.152
Aug 18: Backed off pilot air screw ~1/4 turn to address hanging idle and tough warm starts (although we weren’t following the procedure in the manual)
To Do List
Replace upper rear shock bearing – got a set of bearings but there isn’t much play at all, probably install them next winter
New front brake lever
Oil and filter change – AMSOIL synthetic
Re-fill with coolant
Install new head gasket
Check piston and con rod, visually inspect crank – looks good
After losing confidence in the YZ250F reliability due to the valve failure, I listed it on Kijiji for trade for a 2 stroke. I was offered a 2004 KTM 125sx that was ‘ready to ride’ and when I checked the reviews, this was the year that they sorted out the poor rear suspension. So I met the guy and my heart sank when I saw the condition of the bike and the huge dent in the expansion chamber but it started ok and sounded alright and for some reason, I went through with the trade. When I ran the VIN, I found out that it is actually a 2003, great but at least the VIN was not reported stolen.
When I got it home and started looking closer I found all sorts of little issues, front fender wobbling, play in front wheel bearings and rear shock lower bearing, bent rear sub frame, fork seals leaking, it looks like this poor thing has just been neglected – I would not class this as ready to ride. It amazes me how people will sell something without even washing it??? Pretty disappointed with the accuracy of the description but I could have walked away and the issues really are relatively minor … so far. So I got started on fixing it up, here’s a more recent pic,
125sx parts list and exploded diagrams
Race sags: Josh/Jake = 95mm, Stu = 114mm, static sag = 44mm
Jet needle set to middle notch
24 Aug 2018
Compression damping on rear shock = stock + 2 clicks
Compression damping on forks = stock – 6 clicks
Jet needle lowered to 2nd notch from top to address mid throttle sputter – we’ll see??
Race sag (Stu) = 105mm, static sag = 30mm
To Do List
Give it a good wash
Fix wobble in front mudguard – Front brake cable clamp is missing that provided a spacer, put large washers in for now; new brake cable clamp installed
Fix huge cracks in rear mudguard – Used the old tie wrap stitching trick
Remove seat cover – original cover still underneath with only minor tears
Bend radiator mount tabs back, prevent them from fouling the forks
Threads damaged on oil level check screw – replaced with radiator mount screw since replacement screw had larger (10mm) head
Replace worn vent screw in fork cap – not needed, with good screwdriver not much effort is required to undo
Check rear brake cylinder, push rod comes out? – looks like it could be normal on parts diagram but the rod is well corroded
Replace front wheel bearings
Replace rear shock lower mount bearing – replaced with MSR bearing, not teflon
Fix seized rebound adjust screw on rear shock – got a 2007 XC-W shock PN 12178C04 mono compression control
Fix spring on kick-start shaft – ratchet gear was mis-aligned on shaft – rectified
Replace fork seals – refilled with AMSOIL SAE 5 synthetic
Thread in left side fork protector mount hole damaged – one or two threads seem ok, new screw held in with thread lock
Install new piston – plenty of blow-by on piston skirt, got Wossner piston and ring (awesome!) and new small end bearing
Cylinder stud broken, the nut and top of stud were glued in place!!! WTF?!?! – got the old one out with stud remover, installed new
Screw and bucket holding the rubber chain guard on the swing arm missing – threads in hole on swing arm trashed, aluminum is thin on swing arm not much there to hold heli-coil, tried tapping to M6 and thread locking, not overly happy with it though
Ball bearing for kick start – thanks Dan and TSR
New right side drain plug M10x1 – threads in clutch cover are trashed! There is a bit of the old threads left but the drain bolt slips straight in, tried installing an M10x1.5 Fix-A-Thred insert in the remaining threads but the hole was too small. Plugged with high heat JB Weld
Fix broken arm on sub frame – Josh welded it up in auto class. Update: the weld failed so a small steel bar was fashioned and inserted. Thought about filling around the bar with JB Weld or drilling holes and holding in place with screws but the bar was a tight fit and there should not be any load trying to pull it out the back of the bike so I think it’s good now
Spring for rear brake lever is missing – bought new one
Clutch basket and inner hub are both damaged – replaced with used parts found on ebay
Clutch holding tool required – used impact driver
Replace spark plug – ordered from Fortnine
Install new clutch actuator gasket, screw and banjo washer – screw was too long?? had to cut one down
Get mineral oil for clutch, top up and bleed clutch actuator – also bled the front brake again
Little play in rear wheel – replace bearings, ordered from Fortnine with grips
Installed new grips
Set race sag and suspension settings to stock – race sag = 105mm, static sag = 30mm, compression damping on rear shock = stock + 1 click
Clean rear rim
Install new Shinko rear that came with the bike
Adjust chain tension
Loctite the handlebar perch mount screws
New front tire – picked up a very lightly used Dunlop Geomax
Split engine and remove crank (big end bearing seized)
Install new Hot Rods crank and new bearings
Check power valve z dimension
Teach the lad how to short shift
Properly repaired the rear subframe using a strip of steel drillled and tapped to take 4 M6 machine screws and replaced all the broken zip ties
The little guy was way too big for the PW50 so started looking for an upgrade. I found a couple of 4 stroke TTR90s but didn’t get any replies and once the little guy got wind of a potential bike change, he put the pressure on! I found this PW80 fairly close by and it was listed as having ownership and manuals but was in pretty rough shape compared to some others that were a similar price. We went to see it the day before we went on vacation and as it turned out the guy didn’t have ownership, only some registration paper from the previous owner and no manual??? I should have left it but the guy was firm on his price and my lad was very keen on it (what a surprise) so we paid the money and brought it home.
Here’s what it looked like after a bit of cleaning up.
My kid wanted to learn how to drive a manual gearbox and the winter beater was rusting away so when I saw this going cheap, I jumped on it.
This is my 2002 VW Golf GTI 1.8T and so far I love it! For safety it only needed front rotors and it passed emissions but the CEL came on a few days later. Pulled the scanner out and found code P0420 – catalytic converter efficiency below threshold, will have to look out for a high flow cat. Had a look underneath and the resonator is on it’s way out and the hangar between the cat and the resonator was broken – welded it back on and put some JB weld over a leak at a joint.
Took the lad out for a drive and the airbag light came on. After a bit of Googling I found that a common culprit is the seat belt clip wiring, in particular loose wires in the connector under the seat. When I checked my clip, I noticed it was wrapped in insulation tape – obviously a previous repair here. Sure enough as I removed the tape, I found a wire had come out of the clip so I soldered it back in place and taped up the clip. Then disconnected the battery for 10 mins to clear the light and … it came straight back on!?! I found a local guy selling VAG scanners for under $50 that can read and clear codes for engine, airbag, ABS and transmission (I know you can get them cheaper but I didn’t want to wait for shipping). Hooked it up and pulled the code (it was the seat belt clip) and cleared it – now it stays off. One thing about this scanner, it seems that you can only clear any and all codes in one go, you cannot clear just an airbag code and leave the CEL for example.
Noticed the other day that about 1/2″ at the OD of a front rotor was not being touched by the pad. Thought perhaps the pads were hung up so I took the caliper off and made sure the pads and sliders were not binding. When I looked at the opposite side, the inside pad looked like some gravel had worn a groove in it so it was leaving bands of wear on the rotor and the pads were worn uneven in like wedge shapes. At this point I decided to put new pads on the new rotors – not sure why this wasn’t at least suggested in the safety inspection??
To Do List
Replace cat – CEL error code 16804
Fix rust behind front wheels – got a pair of silver fenders from super-neighbour Troy
Replace muffler – got rear skirt with muffler tip cutout, again from Troy
Fix rust over windshield 2
Replace driver’s seatbelt clip – CEL
Replace vacuum S pipe – temporary tube in place until more motivation kicks in
Replaced driver side parking brake cable
Replace passenger side parking brake cable – caliper was sticking
Replace fuel filter – not done, can’t remember why I was thinking of changing the filter?
Fix arm rest lid latch
Clean throttle body
New rear rotors
Install new front pads
Install new rear pads
Fix rust over windshield 1 – wire brushed windshield rust and painted flat black, if it holds I might fill over and smooth it out – it started rusting again!
November 2014 I wasn’t really looking for another project but I had been toying with the idea of one day picking up a front engine rear wheel drive vehicle like the old Ford Escort Mk II I used to have in the UK. I have some RSS feeds set up and one of them brought a posting for a 1980 Porsche 924 Turbo to my attention. The good parts are that it is front engine rear wheel drive with a manual gearbox, it’s in decent shape and should have the awesome Porsche handling. On the down side, it has been off the road for 17 years, it doesn’t run (no power to the fuel pumps), there are lots of electrical accessories not working, and it’s purple!
I apologise for these bad pictures, it is winter so I’ll have to wait for spring to update with some better ones.
And at long last, here are some slightly better pics,
To Do List
Repair/replace hood latch release lever
Check dampness on DS floor
Machine/replace rear brake rotors
Check rear calipers
Paint rear calipers
Remove remaining AC stuff in PS footwell
Check instrument wiring and grounds
Fix instrument lights
Install boost gauge and manual controller
Hardly any air coming from defrost vents, fix/replace blower motor
Check oil pressure sender
Adjust clutch pedal position
Horn not working, again – bad connection at fuse (#1)?
Check nut on engine mount again
Top up coolant
Paint A arms and heat shields
DS electric mirror not functioning and glass stained – stain covered with blind spot mirror
Driver’s seat cover repair
Fix broken wires around fire wall
Install another new head gasket!
Replace cracked elbow on turbo
Replace waste-gate -got a TurboSmart 38mm from super neighbour Troy!
Replace engine mounts – not needed right now, thought it was broken but the nut had simply fallen off
Replace damaged injector – new ones from RockAuto should be here this week
Put new nut on engine mount
Replace damaged timing belt
WTH, I installed a new head gasket!! Have I really not updated this since then?
Replace transaxle oil, 17mm allen key – Replaced with Lucas synthetic
Rubber hanger broken at cat – repaired with hose clamp
Exhaust split at muffler – new piece welded in
Engine tapping – adjusted valve screws, camshaft and followers replaced
Look at wrapping – Rick paid $3000 for the Dinero wrap
Repair paint damage – most areas filled, sanded and painted matte black
Safety inspection – only failed on fuel hose routing, holes in rear bumper??? and opening hatch – all passed
Replace rear speakers, install door speakers? – Installed Fiero seats with speakers in headrests and sub-woofer
Front alignment – CT
Replace tires – BFGoodrich gForce Sport Comp2 on interest free at CT
Grating sound coming from PS front wheel, bearing – bearings re-greased
Coughs and sputters over 3500rpm – checked for leaks in intake with smoke machine, all good, check fuel pump, fuel filter was clogged
Clean up rust on muffler and paint
Change oil and filter – moved oil pump housing round so that new filter fits – it worked!
Windscreen and headlight squirters not working – fixed old hoses, new one way valve
Speedometer not functioning – connected cable
Fix fuel level sender – and low fuel light, maybe?
Horn not working, again – bad connection at fuse (#1)
Check valve clearances – perhaps a touch tight?
Grease steering knuckle(s)
Repaired flasher relay
Parking brake light switch – made Fiero switch fit