Hi everybody. Yesterday I installed TM36 on 351. I used 51 needle with P-8, pilot 15, and main 130. Local Mikuni dealer suggested me this setup, which fits to what been told here on the forum. I live on 600m elevation usually travelling down to the coast for my rides. Anyway, after starting the bike for first time on chock I noticed that it revs on 4k heating up unusually very quickly. Literally you can feel unusually high heat and smell coming from the engine. When I played with throttle it worked fine but having popping (small detonations) sometimes. With chock off the temperature went down, seems to me. I stopped it to cool it down and think. There is discussion how to adjust idle in the manual. However it speaks about idle-pilot together and one screw. However carby has pilot fuel screw (small screw at the bottom) and idle adjustment screw (big one with plastic cup on the side of carby). The question is - which one should be adjusted? Usually on bikes (normal situation, not tuning) you use big one to control revs on idle. I played with big one and it showed strange behavior - erratic revs near 1.5k when turned out more than 3 turns and surprisingly high revs 7k when I started to screw it in. I am puzzled here. Any help and suggestion is greatly appreciated! Thanks!

 

screwing the idle adjustment screw in on most carbs lifts the slide allowing more air/fuel into the engine, moving the scew out lowers the slide and has the opposite effect.

Thats why the idle got higher the further you screwed it in.

 

Set the idle with the side screw to about normal idle speed. the pilot air screw should then be adj in/out to find the highest rpm.
I have a TM33, and turning the pilot screw out makes the bike RICHER. Some of these carbs have a pilot fuel screw and others have a pilot air screw, which reverses the leaner/richer mode.
Anyway, my suggestion is once you get the bike running at the highest rpm at idle, set the screw at the richest setting that still maintains the high rpm. Then adj the idle speed back with the other screw to the exact proper idle speed.
The pilot screw should be between 1/2 and 2.5 turns out. If it is not in this range, then you need a different pilot air jet. (a 15 sounds way too small, I am running a 32.5 (down from bill's 37.5)).
That is my quarters worth, good luck

 

I'm running a 15 pilot in my TM36...........no problem.

Ride on
Brewster

 

well... does it mean that pilot screw (that should be adjusted) is the small one at the bottom of carby?