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5/18/2021 6:18 AM

I looked in the trash, every drawer of every tool box, under the cabinets and just about everywhere else you could imagine!!

I know I'm not the only one to do something this stupid, Fess up, lets gear some of your maintenance and upgrade mishaps. Photo
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5/18/2021 6:35 AM

In the mid 90s, I put an XR600 motor together from the ground up. The counterbalancer was a two-piece design held together with a snap ring.

Imagine my joy when I had the entire motor re-assembled, in the frame and oil lines purged when I saw the counterbalancer snap ring laying on the work bench....

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Yours In Sport,

Jason

5/18/2021 7:00 AM


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Do It In The Dirt!

5/18/2021 7:05 AM

I actually didn't find the tire spoon until was changing out the rear tire with 7 hours of use.

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5/18/2021 7:10 AM

Holy shit!!

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5/18/2021 7:12 AM

Got any extra clutch pins in there? ... asking for a friend... whistling

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5/18/2021 7:13 AM

Did that not feel weird riding? laughing thats awesome

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RPM Performance
CT
783

5/18/2021 7:26 AM

murph783 wrote:

Did that not feel weird riding? laughing thats awesome

You would think so, but it was a brand new bike that hadn't had the suspension set up .... Yet you think I would have felt some imbalance.

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5/18/2021 7:55 AM

baxterj787 wrote:

In the mid 90s, I put an XR600 motor together from the ground up. The counterbalancer was a two-piece design held together ...more

What did you do.....leave the engine sit for a week and re tackle it ? Throw a wrench ? Or just start tearing it back down ?

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GP740
Since 1987

5/18/2021 8:42 AM

How many top ends do you have to reassemble before you do one with only one circlip on the piston? Just asking for a friend.

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Braaapin' aint easy.

5/18/2021 9:21 AM

Put a pw carb togeather wrong once. It held the needle and slide up. Kicked it and it fired right up and took off in my garage like a rabid dog. I had one hand on it as it slammed into my desk and started to spin in circles. Haha

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5/18/2021 9:35 AM

Hoseclamp wrote:

Put a pw carb togeather wrong once. It held the needle and slide up. Kicked it and it fired right up and took off in my garage ...more

Hahah - Had a 71 Montesa 250 and was putting Tomaselli Quick Throttle on it. Hmm cable free length, what is that. Started the bike in the back yard (the shop was the kitchen in this rental house) Half throttle revs pretty effen fast! Slammed the bike into gear and then held on with the throttle hand. Dirt flying everywhere as the bike circled me!!!
Wrestled that beatch to the ground and yes I did pull the cap!!! Desperation causes stupid to engage.....

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Germany 1975 250 CZ Centerport, laydown shocks, mikuni with reed valve, Marzocchi forks with me as the motopilot

5/18/2021 9:41 AM

LOL. "I feel like I have a gyroscope in my rear wheel!" You must've had a wonky tire balance when spinning in midair!...and turning one way was probably a little easier than the other way.

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5/18/2021 10:16 AM

Years ago I serviced a set of WP closed cartridge forks on one of my bikes. Got them all bolted up and torqued down meticulously. Stood back to admire my work and grab the front tire, when I looked at the full wrap fork guards laying on the bench. Sigh....

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5/18/2021 10:42 AM

rbm33 wrote:

I looked in the trash, every drawer of every tool box, under the cabinets and just about everywhere else you could imagine!!

...more

How do you like that "No Pinch" tire tool?...wink

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Hello..Vital?..

5/18/2021 10:46 AM

Took the boys to the track Saturday after a late Friday night wrenching on 3 bikes. The damn KX100 didn't want to start, and when it did, didn't run right, had no power. Gas - check, spark - check, air filter clean - check, plug - check but wet. WTF? Got frustrated, gave up.

Got home and took a closer look and found the paper towel I'd stuffed in the intake boot to keep the dirt out while I changed the air filter. To this day they won't let me forget it.

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5/18/2021 10:50 AM

3 years ago I fully assembled my FC350 engine after a crank replacement only to have 1 washer leftover. After hours of head scratching and looking at parts schematics I realised the washer sat behind one of the transmission shafts....
The anger in me as I fully dismantled the engine and split the cases again just to fit that 1 washer!

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5/18/2021 10:54 AM
Edited Date/Time: 5/18/2021 10:56 AM

Hoseclamp wrote:

Put a pw carb togeather wrong once. It held the needle and slide up. Kicked it and it fired right up and took off in my garage ...more

Forgot to re-attach the autolube hose to it after having the carb off once. That was a short-lived mistake. Locked solid, but oddly, no top end damage. Crank bearing just froze in the cage, the one thing that you would think could do with no lubrication for awhile.

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5/18/2021 11:07 AM

Years ago I did a bottom end on my 06 KX250, decided to replace trans bearings while I was in there. Since I had just gotten a big boy job, I invested in a 20 ton hydro press from HF.

First bearing, press press press press, BANG. The bearing had bottomed out and blasted through the case.

Ordered a brand new set of cases. Expensive mistake. Ooops.

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5/18/2021 11:35 AM

Hammer 663s wrote:

Took the boys to the track Saturday after a late Friday night wrenching on 3 bikes. The damn KX100 didn't want to start, and ...more

Hahaha must be a NorCal thing. I did the same thing back in 2004-2005 ish with my YZ250.
Got to E St with a couple buddies and just couldn't figure out why my bike wouldn't run right. Never made it out of the pits. Got home and found a couple blue workshop paper towels in the boot under the freshly oiled filter.

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5/18/2021 12:07 PM

I did a desert race years ago, promoter said spark arrestors were mandatory and they were checking. I didnt have a sparky so I MacGyvered one out of some stainless screen to fit the tip of my YZ250. Halfway through the race bike started running like caca at 1/2 throttle and up. Went through all my spark plugs and eventually pulled out of the race.

Got home and after hours of testing electrical connections, coil, stator, kill switch, carb etc found that my homemade spark arrestor screen made it all the way into the front of the silencer where the inlet pipe is, became saturated with two smoke drool and plugged the pipe.

Reversion is real.

Also, they never once looked at my silencer to see if I had a spark arrestor...bastards.

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5/18/2021 12:16 PM

rbm33 wrote:

I looked in the trash, every drawer of every tool box, under the cabinets and just about everywhere else you could imagine!!

...more

B Lenny wrote:

How do you like that "No Pinch" tire tool?...wink

Ha, it definitely doesn't pinch! I seriously have no idea how it made it 7 hours like that.

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5/18/2021 12:19 PM

Guilty here. Did the same darn things years back.

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5/18/2021 12:24 PM

This is hilarious rbm33! So good I sent a link to the owner of Nitro Mousse lol

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Instagram: @motoxeno


Premium Off-Road Products: www.jcrspeedshop.com


5/18/2021 12:33 PM

Got a little case glue on YZ125 shift fork. Record time reassembly and...won't shift past 5th.

Tear it apart and stare at it for a couple days until I realized the one shift fork wasn't sliding on its shaft. Probably would have been fine if I had just let it warm up lol.

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5/18/2021 12:51 PM
Edited Date/Time: 5/18/2021 12:55 PM

Xeno wrote:

This is hilarious rbm33! So good I sent a link to the owner of Nitro Mousse lol

LOL, funny. The Nitro Mouse survived and is still in service! I install my inserts and little differently than most, which may not be a good thing, similar to how you install a Tubliss set up and once you pop the tire over both sides of the rim its pretty easy for the tool to slide down inside the tire.

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5/18/2021 12:59 PM

I reversed the 2nd and 3rd gears on both the drive and driven shaft in a 93 RM-125 The bike shifted from 1st, to 3rd, to 2nd, to 4th..............The kid kept telling me that day that it bogged in second and overrevved in third. Didn't believe him until I rode it down the street after we got back from the track. Called a buddy and yupt, 2 mistakes will do that!

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5/18/2021 1:09 PM

Gears in a AT1 125cc. I was 14 and working in a Yamaha Shop and purchase the AT1 for $400 from the shop. On my first ride 2nd gear just spun! 1st and 3rd and the others were good. The owner of the shop and no clue. Split the cases and couldn't find anything. Put it back together and 2nd spun again!!

Split the cases and brought the gears to work and waited for a customer who raced AT1's. Showed him the gears and he fetched me right up. 2nd pinion presses on and it was spun and gaulded, thus it took power to spin the gear!

Raided the parts room and updated the trans....including straight cut gears for the clutch and crank!!!

A hell of a way to learn to split cases.....

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Germany 1975 250 CZ Centerport, laydown shocks, mikuni with reed valve, Marzocchi forks with me as the motopilot

5/18/2021 1:13 PM

I had a well known engine builder in El Cajon, CA port the cylinder on my 83 RM250 in 84. They also stress relieved the top of the piston which removed the direction arrow on the piston. Of course I put the damn piston in backwards. Ran great for a minute... Had to have the bottom end rebuilt. I hated to tell the mechanic what I had done.

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5/18/2021 1:25 PM

I'm not even sure how you lose a tyre iron inside the tyre lol

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