Service Manual

ManualsBrandsToro ManualsSnow ThrowerToro 38440

CARBURETOR

26

Figure 39

0720-07

Piston Ported Engine

(R tek Engines Only)

The piston ported en

g

ine does not use the “click" type

adjustment. For the piston ported en

g

ines, the

g

overnor is adjusted by bendin

g

the bracket that the

g

overnor sprin

g

is attached to. Otherwise, the function

of the

g

overnor is the same (see Fi

g

ure 40).

Figure 40

3S-001

Presetting the Governor

(DuraForce Engines Only)

Note: Each “click” of the

g

overnor collar represents

approximately 50-75 RPMs.

1. Turn the collar clockwise to increase sprin

g

tension

(and en

g

ine RPMs) or counterclockwise to

decrease sprin

g

tension and RPMs. (See Fi

g

ure

39.) Preset the

g

overnor collar 3 or 4 clicks

clockwise.

2. Use a tachometer to check en

g

ine speed; 2900 ±

300 RPM for DuraForce en

g

ines on mowers.

For R tek (piston ported) en

g

ines refer to the

specification pa

g

es.

Should the

g

overnor link (A) be bent or replaced,

adjustment will be necessary. (See Fi

g

ure 41.)

Figure 41

0893-039

A

g

ood startin

g

point is about 1¼” (31.75 mm) from the

castin

g

to the end of the air vane. (See Fi

g

ure 42.)

Then move the air vane until the throttle is full open.

The air vane must not contact the CD i

g

nition. Should

the

g

overnor sprin

g

be removed, reinstall with both the

open ends of the sprin

g

facin

g

you.

Figure 42

7.tif

A

(31.75 mm)