Mclane Throw Reel Mower - Service and Adjustments; Carburetor Adjustments; Clutch Belt Maintenance and Replacement

SERVICE AND ADJUSTMENTS
TO ADJUST CHOKE CONTROLS'.
Refer to engine manual for detailed
instrucEms.
REPLACE AIR CLEANER.
Clipforthrottlecable shouldsecurecableto
handle.
CARBURETOR ADJUSTMEN3nS
Minor carburetor adjustment may be
required to compensate for differences in
fuel, temperature, altitude or load. Air
cleaner and air cleener cover must be
assembled to carbu,'etor when nJ_nrmg
engine.
INmAL ADJUSTMENT:
Gen_ tum needlevalve clockwiseuntil it
just closes. Valve may be damaged by
turningit intoo far.(Referto F_j, 19).
Next open needle valve 1-1/2 turns
counterclockwise.This initialadjuslment will
permit the engine to be started and
warmed up (approximately5 minutes) prior
to finaladjus1_nent.
IDLE SPEED HROTTLE
ADJUSTING T THROTTLE
SCREW STOP
CARBURETORADJUSTMENT FIGURE19
FINAL ADJUSTMENT:
Place throttle control in "FAST" position.
"rum needle valve in unt_ engine slows
(ckx:kwise-lean mixture). Then rum it out
past smooth operating point until engine
runs unevenly (rich n-;_ture) Now turn
needle valve to the midpoint between rich
and leansothe engine runssmoothly Next,
adjust idle RPM. Rotate throttle
counterclockwise and hold against stop
while adjusting idle speed adjusting screw
to obtain 1750 RPM. Release throttle.
Engine should accelerate without hesitalion
or sputtering. If it does not, carburetor
should be readjusted, usuallyto a slighlty
richermixture.
CLUTCH BELT MAINTENANCE:
1. Inspectdutch beltfrequentlyfor wear
anddamage. Worn anddamaged
belts cancause _ clutch to operate
improperly,such ascontinuous
movement of the reel and rollerdrive
when all leversare disengaged.
Replace the belt when excessive wear
or damageoccurs.
CLUTCH BELT REPLACEMENT:
1. Removecotterpinfrom lower dutch
controlrod(Part 1012D) and slide
control rod from dutchbearing
(Part 1046D).
2. Remove belt guard bolt using lf2"
wrench and removebelt guardfrom
the dutch body.
3. Detach Deadmen dutch spring (Part
1052D)from deadman beltidler
(Part 1047D).
4. Removethe wom belt.
5o
Installnew beltby placingaround
jackshaft pulley(Part 1053)firstand
thenaround the engine pulley
(Part I063).
6. CAUTION: Make sureidler bearing
(Part1048D)restsagainstthe insideof
the belt.(The belt mustbe placed over
the pulleysand the idlerbearing).
7. Replace daadman dutchspring.
(Attachto beltidler).
8. Replacebeltguard and belt guard bolt.
De nottighten bolt.
9. Replaeedutch controlred rnakingsure
red is placedoutside of _e belt.
10.
Replacecotter pin and check for
proper tension by followingin_ons
on page 4 under heading "Engine
Clutch RodTension Adjustment"
11.
Now checkdutch belt guard for proper
adjustment.There must be 1/16"
clearance between the top of the belt
and the bottom ofthe beltguard. Adjust
guard up or down to maintain the 1/16"
dearenea.
NOTE: The clearance must be checked
and adjustment made when the clutch is
engaged and there is tension on the belt.
(Lift dutch _eve_to the handle to
clutchand puttension on thebelt).
12. When the 1/16"dearance is achieved,
tighten belt guard firmly.
IMPORTANT:
IMPROPER ADJUSTMENT
OF BELT GUARD AND
TENSION OF CLUTCH
CONTROL ROD CAN CAUSE
PREMATURE WEAR OF THE
BELT AND FAILURE OF
PROPER CLUTCH ACTION.
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