Toro Lawn-boy - Reed Valve Engine (Duraforce Engines Only); Piston Ported Engine (R Tek Engines Only); Presetting the Governor (Duraforce Engines Only)

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CARBURETOR

Figure 39

0720-07

Piston Ported Engine

(R tek Engines Only)

The piston ported en

ine does not use the “click" type

adjustment. For the piston ported en

ines, the

overnor is adjusted by bendin

the bracket that the

overnor sprin

is attached to. Otherwise, the function

of the

overnor is the same (see Fi

ure 40).

Figure 40

3S-001

Presetting the Governor

(DuraForce Engines Only)

Note: Each “click” of the

overnor collar represents

approximately 50-75 RPMs.

1. Turn the collar clockwise to increase sprin

tension

(and en

ine RPMs) or counterclockwise to

decrease sprin

tension and RPMs. (See Fi

ure

39.) Preset the

overnor collar 3 or 4 clicks

clockwise.

2. Use a tachometer to check en

ine speed; 2900 ±

300 RPM for DuraForce en

ines on mowers.

For R tek (piston ported) en

ines refer to the

specification pa

es.

Should the

overnor link (A) be bent or replaced,

adjustment will be necessary. (See Fi

ure 41.)

Figure 41

0893-039

ood startin

point is about 1¼” (31.75 mm) from the

castin

to the end of the air vane. (See Fi

ure 42.)

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

The air vane must not contact the CD i

nition. Should

the

overnor sprin

be removed, reinstall with both the

open ends of the sprin

facin

you.

Figure 42

7.tif

(31.75 mm)

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Toro Lawn-boy - Reed Valve Engine (Duraforce Engines Only); Piston Ported Engine (R Tek Engines Only); Presetting the Governor (Duraforce Engines Only)

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