JDcrawlers Messageboard

The spark mark on the flywheel was to show with a timing light while the engine was running. A volt-ohm meter will show if the points are making good contact. Should show zero resistance immediately when closed.

Set your points when they are at maximum open, i.e. when they are at the "point" of the distributor cam lobe.

Did something similar on a 40C. Width WITH WELD BEAD must be less than space between inner and outer links in the rail (chain) probably by about 1/2". The adjust centering per manual.

I have seen a single bolt replaced by a dowel. Is there room for a bolt with specially shaped manually ground) nut?

I have a winch off a 350 complete but no cable. It has been on boards in the barn here in Texas for a few years. Don't know if it works.

Done that for my 40C with home made ripper. Used Zamboni blade welded in Vee shape and pivoted in each shank so it could pull up without strain. Grandson used it on his 350 and it works but you only use it for a known root as it takes too much power to leave it down all the time to cover an area. Mi...

If you have free travel of the throwout bearing (from ALL fingers) and it still slips you have no option other than tearing it down. If so and assembly is good then suspect the pressure plate springs first.

I did that years ago so the memory is a bit fuzzy. I think I raised the side frames along with the transmission, then pulled it out. Had broken out the bottom, front bearing and the owner kept using it and shelled out the whole tranny and pinion. Found a whole, used unit to replace it all.

If your discs are too thick (swollen) the clutch may not disengage, as you surmised. If the throwout bearing would adjust to meet the clutch fingers then it should have still disengaged assuming all fingers are adjusted (JD 7 gauge) and the brake could be the culprit. If pulling the left steering cl...

Does it backfire at idle or low rpms or just when throttle is opened?

I wouldn't trust brass to have enough strength for such a crack. Have it ground and welded professionally with so much at stake.

Saw one like this once where they had assembled the clutch wrong. They didn't realize one fiber goes inside the snap ring.

It appears your steering brake is way out of adjustment on that side. Brakes usually work better in reverse because of the direction the drum turns within the band. You need a manual to adjust the brakes properly. I have no experience with 450's at all so this is general based on the info you gave.

Yes

If it really steers then either the clutches are disengaging as they should or are slipping, which is unlikely. The adjuster should be "nearly bottomed out" with a new clutch pack. If the adjusting bolt (with the 3/4" head) is bottomed out then either the brakes are shot or you left out a part. The ...