Simplicity SOVEREIGN 3416S - Starter-Generator Belt and Carburetor Adjustments

Figure 17, Generator located on right side of engine.
4. Turn the rear most out at (C) counter-clockwise to loo¬
sen it slightly. To increase the amount pulley (A) travels turn
the nuts at (C) clockwise. To decrease travel of pulley (A),
turn the nuts counter-clockwise. Adjust themits at (C) and
observe the travel of pulleys (A) as the power take off lever
is engaged and disengaged. When adjustment has been made
so the pulley (A) travels 1/0" tighten the rear most nut at
(C) against the forward nut to lock them in place.
5. Rscheck your adjustment.
6. Lower the seat deck.
STARTER-GENERATOR BELT ADJUSTMENT
See figure 17. If the starter turns, but the engine does not
rotate, the starter generator belt may need tightening. Pro¬
ceed as follows:
1. Raise the tractor hood as explained on page 9 under
Raising the Tractor Hood.
2. See figure 17. Loosen slightly the two nuts (A) cap screw
(B) and nut (C). Use a pry bar (D) similar to the one
shown between the generator and engine block to apply
pressure to the generator and tighten the belt. The belt
should be tight enough so thumb pressure at (E) will de¬
flect it about 1/4 J \
3. While holding the pry bar to maintain tension on the
belt, tighten the mounting bracket at fC) securely.
4. Actuate the starter to make sure the engine will rotate. If
it does not, loosen the nut at (C) and apply more tension to
the belt.
5. Tighten the two nuts at (A) and the cap screw (B) securely.
Figure 18* Carburetor adjustments.
6. L ower the hood and lock it in place.
CARBURETOR ADJUSTMENT
The carburetor is adjusted at the factory and normally does
not need adjustment unless it has been disassembled or
tampered with.
INITIAL ADJUSTMENT
Initial adjustment will permit the engine to be started and
wanned up prior to final adjustment. Proceed as follows:
1. See figure 18. Turn the needle valve (A) clockwise until
it just closes. CAUTION; VALVE MAY BE DAMAGED
BY TURNING IT IN TOO FAR.
2. Open the needle valve (A) one and one half twins coun¬
ter-clockwise,
3. Turn the idle valve (B) clockwise until it just closes.
4. Open idle valve (B) one half to three quarter turns.
FINAL ADJUSTMENT
1. Start the engine and run it at full speed.
2. See figure 13, Turn needle valve (A) clockwise until en¬
gine misses, (Lean mixture), then turn it out (counter¬
clockwise) past the smooth operating point, until the engine
runs unevenly (Rich mixture). How rum needle valve (A)
to the mid-point between the rich and lean mixture so the
engine runs smoothly.
3. Move the engine speed control lever to the slow position,
and set the idle speed adjusting sc raw (C) so a fast idle is ob¬
tained (1200 RPM). Hold the throttle in this idle position
and turn the idle valve (BJ clockwise (Lean) and counter¬
clockwise (rich) until the engine idles smoothly.
4. Reset the idle speed so the engine idles at 1200 RPM, Push
the engine speed control lever forward to the fast position,
the engine should accelerate without hesitation or sputtering.
If the engine does not accelerate properly, readjust needle
valve (A) to a slightly richer mixture.
13