Yanmar YB201

[uncleseb]

hi , i have a yanmar YB201 . it has a startup problem. the engine starts very badly I am obliged to use the start pilot . hot engine if I let it stand for 10 minutes will not boot I have to use start pilot.
I don t have the manual for this engine (3T84) somebody could provide it?
I would check the pump timing.
Thank you for your help
Sorry for my little english

 

[normde2001]

Have you performed routine operator maintenance, fuel, air filters? Fuel pumps don't get out of time unless they have been removed and shims removed or added. Is battery fully charged?

 

[winston1]

Does the engine have much blowby? Is it strong running when cranked? Any smoke of what color? Does it have a compression release?

 

[uncleseb]

hi,
yes i have performed routine operator maintenance , the battery is ok.
When the motor starts with start pilote ,after it runs well.
When it doesn't wan't to start he have white smoke .
I don't know for the compression

 

[normde2001]

All a diesel has is fuel, air, (intake and exhaust), and compression, assuming proper cranking speed. Only on-site troubleshooting can determine which is causing the problem. Valve adj. ok? Exhaust not plugged? water/air in fuel, good compression, about 500psi, (or eq. for your country)?

 

[uncleseb]

hi , i wan't to vérify the valve clearance i don't have values ​​and the method, and i don't find manual for motor 3T84HLE
Anybody have it ?

 

[winston1]

hi , i wan't to v駻ify the valve clearance i don't have values ​​and the method, and i don't find manual for motor 3T84HLE
Anybody have it ?

Probably about .008" but that is only a guess. Pretty sure Danny Parker with Parker Equipment (Untitled) has that information. Here is a guide on setting valves. Yanmar Tractor Valve Setting

 

[uncleseb]

many thanks .
Do you have information about timing pump ?

 

[normde2001]

many thanks .
Do you have information about timing pump ?

If you want to know how many shims to use when installing the pump you would need to buy a manual.

 

[winston1]

Have you had the pump off? If not, your timing should not be off. If so, put it back with the same shims.