Governor Linkage Horizontal Crankshaft Engines (Hbl - Bhk - Bht & P Versions); Speed Adjustment; Application Variants; Governor Adjustment - Tecumseh SPECTRA 37 Service And Repair Manual

For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
3. GOVERNOR LINKAGE HORIZONTAL
CRANKSHAFT ENGINES (HBL-BHK-BHT
& P VERSIONS)
a) DESCRIPTION AND ADJUSTMENT (Fig. 10)
The link (B) positively connects the lever (E) with the
governor lever (A). The link (C) connects the lever (E)
with the main throttle lever (D). With engine running,
governor rod (P) rotates CCW. The spring (L) is tensioned
according to the position of lever (G) thus controlling the
load applied to the throttle and the engine's speed. By
bringing lever (G) completely upwards, the max speed is
obtained.
Check for maximum speed in this position and adust the
speed with the screw (H. Major speed adjustments are
made by moving the hook of spring (L) to a different hole
in lever. Moving the spring upwards increases the speed
and vice versa.
Moving the lever (G) down obtains the idle speed. The
idle speed is adjustable with the idle speed screw located
on the carburettor in contact with the main throttle (D).
Moving the lever (G) down further obtains the earth contact
and the engine stop position.
b) ASSEMBLY
If a governor has been completely stripped proceed as
follows:
Fix the clamp (M) on rod (P) and the lever (A) on the
clamp (M) with the screw (V).
Mount the governor plate (S). Take care the link (B) is
mounted on the lever (E) at the second hole from the
internal side and the lever (V) at the first hole from the
external side.
Before mounting the carburettor insert the link (C) in the
first hole of lever (E) from the external side, and on the
first hole close to the throttle rod of the main throttle.
The governor spring (L) has to be mounted at the first
external hole on lever (F) of governor plate and on the
governor lever (A) at the hole selected in accordance
with the speed categories. (See engine specification).
c) SPEED ADJUSTMENT (Fig 10 & 11)
Ensure the spring (L) is mounted in the right hole on
lever (A) for the required engine speed and lever (G) is
in "max" speed position.
Adjust the screw (H) on the governor plate (S) for fine
adjustment of the max speed.
For the idle speed (2000-2250 rpm) adjust the carburettor
idle screw.
d) APPLICATION VARIANTS
Two different controls are available: Remote control and
Manual control.
Remote control has governor plate (S) and a Bowden
cable is fixed by clamp. (Fig 10)
For Manual control there is additional lever (N) and link (Z)
which are mounted on governor plate (S). (Fig 11-1)
e) GOVERNOR ADJUSTMENT (Fig. 10)
Having screw (V) loose, move throttle control lever (G)
into max position. Turn lever (A) and clamp (M) clockwise
and tighten screw (V).
53
www.mymowerparts.com
Fig. 10
Fig. 11
Fig. 11-1