Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Is there a simple way to disconnect the governor arm from the carborator? I've removed the bolts that hold the carb on but it won't slide off (It needs cleaned big time) because the of the linkage to the governor arm (wire rod and spring).  The shop manual says to remove one of the two screws that hold it on, but I'm not sure which one should be removed or what will happen to the governor if I do remove them.  I have heard that governors are really hard to adjust and I was trying to avoid that agrevation.  I've labels the two screws "A" and "B"  (one of them is really a bolt).

"B" is the clamp FOr the Governor rod "A"

I would take both the nuts from the intake manifold and tighten them against  each other  on one of the carb studs "double nut",   then unscrew the stud from the engine case.

Friiy

friiy wrote:
No, not on this carb.  The rods are just long enough to get one small nut on there. No hope in getting two nuts on there. But thanks

I see what you mean, it's yamaha carb okay I understand, I use to work on walbro or tecumseh well let me try to find some documentation for those carb I'll be back soon.

At this point I would say bend the arm of the governor,  about 45 degrees.

Hold the it with two pairs of needle nose,  bend it just below the link holes, use the 2nd to below the first about an inch below to stablize the rest of the arm so the whole thing does not twist..

You aren't putting this thing in a classic Yamaha show are you?  :)

Is this a "TK" carb?

Good Luck,

Friiy

If you use rubber hose over the plyers,  you won't put any teeth marks on the arm,   those arms should bend easy,   and bend back with no problems.

Or you could just mark the Govorner shaft and take it off,   They are not hard to set,  just like any other govenor..

Good Luck

Friiy

friiy wrote: The motor must have been made in Japan so I just assumed it was a Mikuni carb.  But maybe you are right.  I'll have to  take a closer look.  Would a TK carb have the letters "TK" imprinted on it?

Yeah,  Funny round little circle with "TK" in it,  (rounded edged letters)....I thought I saw the logo in the photo..

What model of engine is this? what is it on...  I can see it is gummed up in the photo.   and has not run for sometime.

....Brown fuel gum deposits under the choke butterfly..

Friiy

Is the carburetor's model number also printed ?  I'd like to find a rebuild kit or a direct replacement. 

Kits are not really needed ,  There is only about 3 or 4 things that may need to be replaced at worst case....

1) float inlet needle

2) Bowl  seal (large o-ring goes around the bowl and seals to the carb body)

3) bowl bolt seal

4) float and pin

Unless the carb is Rotted out with water and full of powdery residue...   I would only change the the parts that are un-serviceable after cleaning.

The float is un-ajustable, the needle is only thing that is hard to tell it it is bad without a trained eye...  But  if It leaks after being put back together then needle is suspect..

About everthing can be reused unless the carb is rotted out or full of green and white powder..

as for a carb model it Should  be printed on it,  But who knows... What modle of Yamaha is this and what type of thrower (model)?

Thats most likely about $85 for that carb.

Good Luck,

Friiy

I've got it apart and now I'm trying to free the jets and nozzles. There's quite a bit of corrosion, we'll see how it goes.

#9   7KF1434221 JET. PILOT (#42)
#10 7KF1434345 JET. MAIN (#90)
#11 7KF1434100 NOZZLE. MAIN
#13 14T1439202 VALVE. NEEDLE

Ref # Part number
1 7KF1450100 CARBURETOR ASSY superseded by 7KF1450101.
2 7KF1422700 WASHER
3 7KF1416200 BOLT. HOLDING
4 7KF1419100 PLUG. DRAIN
5 6461421201 SPRING. PILOT ADJUSTI (3 needed)
6 7KF1421100 SCREW. PILOT ADJUSTIN
7 7KF1421600 SCREW
8 7KF1438400 GASKET. FLOAT CHAMBER
9 7KF1434221 JET. PILOT (#42)
10 7KF1434345 JET. MAIN (#90)
11 7KF1434100 NOZZLE. MAIN
12 3671438600 PIN. FLOAT
13 14T1439202 VALVE. NEEDLE
14 7KF1438500 FLOAT
15 7KF135550000 MANIFOLD,INTAKE
16 7KF1355710 GASKET