Clutch Cable Adjustment; Securing Nuts & Bolts; Rear Defl Ector; Carburettor Adjustments - Hayter Harrier 56 Autodrive VS BBC Operator's Manual

MAINTENANCE

Clutch Cable Adjustment

At any time the operator feels that the mower is
loosing drive, check the following.
• Stop the engine.
• Pull the mower backwards at the same time
progressively engage the Sens-a-Speed
the rear rollers lock, at this point the Sens-a-Speed®
lever should be 50 mm from the handle.
• If the distance between the Sens-a-Speed® lever
and handle is less than 50 mm, regulate the
engagement position using the black plastic cable
adjuster (1) to regain the 50 mm distance.
Note this adjustment is approximate, at the nearest
opportunity, a service should be carried out to ensure
the spring on the clutch cable attached to gearbox is
correctly set. This adjustment should be done using
the black plastic cable adjuster (1).
(Refer fi g.34)
With the Sens-a-Speed® lever fully engaged, the
cable should be adjusted to give a spring extension of
10mm.
(Refer fi gs. 35 & 36)
Fig. 34 Fig. 35
50 mm Sens-a-Speed
lever fully
engaged
1
Securing Nuts & Bolts
Regularly check that all securing nuts and bolts are
tight. Replace missing or damaged items immediately.
Rear Defl ector
® lever until
WARNING: Improper maintenance, use of non
conforming replacement components, or the removal
or modifi cation of the rear defl ector may cause death
or serious injury.
Remove grass debris from the rear defl ector
immediately after use and check its condition for signs
of damage.

Carburettor Adjustments

Never make adjustments to the carburettor or engine
speed. The carburettor was set at the factory to
operate effi ciently under most conditions.
Do not tamper with the governor spring, linkages, or
other parts to change the engine speed detailed in
the Product Specifi cation section. If any adjustments
are required contact your Hayter Authorised Service
Dealer for service.
Fig. 36
TM
Clutch spring

Blade Brake Test

The blade is designed to stop within 3 seconds, after
you release the BBC control lever. Ensure that the BBC
control lever functions properly each time before you
operate the mower.
If the blade does not stop within 3 seconds or there
is a grinding or scraping, metal-to-metal noise when
you release the BBC control lever, contact a Hayter
Authorised Service Dealer.
This same recommendation applies if you observe
heavy vibrations when using the mower.

Lubrication

Lubricate the wheel bearings, pivot points and linkages
with engine oil yearly or before storing mower away.
Apply a good quality medium grease to the inner
control cables at the point of entry and exit from their
outer casing.
Do not add lubricant or grease to the polymer rear
roller bearings.
Extend clutch
spring
by 10 mm
Clutch spring
23