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oil pressure switch #37240-p13-013 back in stock at 4into1.com $12.95

Talked to an acquaintance who tends to be a better mechanic in story telling than in real life. He told me he rebuilt a xs400 using pistons from a 200cc Yamaha 1985 moto 4 atv. Anyone have any history or theories on this? I kind of have my doubts.

pipe wrench with sharp teeth if there is enough to grip, otherwise weld up a new nut as previously suggested

I'm with you. Why pay a fortune to keep a throw away bike going. I used mine all last year without a working switch. Using a Honda style switch is no problem. I used a really cheap thread gauge to determine the pitch so close is good enough.

diameter is about 9.5mm or .384 inces appears to be straight I see no taper installed with minimal Teflon tape and carefully snugged up

factory #37240-P13-013. Might have trouble finding a repop right now. Siriusconinc will have them in march. 4into1 also out of stock for repop. Factory Honda can be found and are quite common.

Wolfe 11b, I'm over six feet and have a back full of scar tissue. Custom seats are my thing.

One more thing. The pitch of the thread is a .9 metric fine. Both switches are made by Nippon Denso.

NO, I did not buy used off another bike. I own several old Hondas and experimented with what was on hand. I have since purchased new and am running with it. Don't assume facts that are not in evidence. As to the pressures involved, I have no clue. The original xs switch was used on...

Pulled a switch off of a 76 550k Honda. Works perfectly. Can be found selling for anywhere between 12 to 30 bucks. Depends on if it is original Honda or repop.

Are you sure it isn't that crap seat that hurts your back? Higher bars are going to force an upright seating position. In turn all your weight will be centered on a very small area. A slightly forward position shifts some weight to your thighs and off the tailbone.

I checked flea bay for the switch. Don't want to buy used. I know there are NOS switches for sale. I don't understand the price but Yamaha thought it was worth $125 back in the day. If you are easily offended stop reading now. Too many people miss the point on these forums. The...

Switch shot craps. Part is obsolete have not been able to find an OEM replacement. Is there a switch from another bike, not a Yamaha, that will fit? Anyone know the thread size? Thanks

Why didn't you check into getting a proper title before building your bike? All your work may go down the drain if the state refuses to issue a title. Get down to the DMV or contact the highway patrol to get current information. Guys on this board think its a good idea to cut and reweld...

I think Duro has what you need. I have 130/90-16 on the back of my 81 desert sled bike. I trimmed out some of the unneeded gusset at the front of the swing arm to gain ample clearance, then welded the round pipe to the remaining gusset. Has worked great for the past couple of years and allows...

in Kansas, this bike qualifies as an antique. Get a notarized bill of sale from owner. The highway patrol will have to do an inspection. The bike need not be running but mostly complete. If the bike is not stolen or have any problems the KHP will issue papers to take to the county clerk to...

My last shot with first hand knowledge. Check the coils. A misfiring coil can be mistaken for fouled carbs.

Did you clean the tank? Have you installed a fuel filter? If it runs lean then rich with no changes, you might be pushing crud thru the system.

Mickey85 needs to know there are other ways of solving the problem. Only he can determine what his time is worth and it is valuable.. There are instances when components become unfixable. Who knows what a previous owner may have done, like drilling out carb passages. If the carbs are...

Be careful with the spray cleaner. The paint on the dial faces comes off very easily. Solvents will destroy the paint in a heartbeat.