Husqvarna 961430086, Operator'S Manual

14

MAINTENANCE

1

3

2

TO SHARPEN BLADE

NOTE

:  We do not recommend sharp en ing blade - but if 

you do, be sure the blade is balanced.  An un bal anced 

blade will cause eventual damage to lawn mower or engine. 
•  The blade can be sharp ened with a file or on a grinding 

wheel. Do not attempt to sharpen while on the mower.

•  To check blade balance, you will need a 5/8" diameter 

steel bolt, pin, or a cone balancer.  (When using a 

cone bal anc er, follow the in struc tions supplied with 

bal anc er.)

NOTE: 

 Do not use a nail for balancing blade.  The lobes 

of the center hole may appear to be centered, but are not.
1.  Slide blade on to an unthreaded portion of the steel 

bolt or pin and hold the bolt or pin parallel with the 

ground.  If blade is bal anced, it should remain in a 

horizontal po si tion.  If either end of the blade moves 

downward, sharpen the heavy end until the blade is 

balanced (Figure 18).

1. Center hole
2. 5/8" Bolt or pin
3. Blade

Figure 18

Figure 19

GRASS CATCHER

•  The grass catcher may be hosed with water, but must 

be dry when used.

•  Check your grass catcher often for damage or 

de te ri o ra tion.  Through normal use it will wear.  If 

catcher needs replacing, replace only with ap proved 

replacement catcher.  Give the lawn mower model 

number when ordering.

GEAR CASE 

•  To keep your drive system working properly, the gear 

case and area around the drive should be kept clean 

and free of trash build-up.  Clean under the drive cover 

twice a season.

•  The gear case is filled with lubricant to the proper level at 

the factory.  The only time the lubricant needs attention 

is if service has been performed on the gear case.

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

SAE VISCOSITY GRADES

-20 0 30 40 

80 

100 

-30 

-20 0  20 30 

40 

F

C

32 

-10 

10 

60 

5W-30

SAE 30

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service 

classification SG–SL. Select the oil's SAE viscosity grade 

according to your expected operating temperature 

(Figure 19).

NOTE:

  Multi-viscosity oils (5W30, 10W30 etc.) improve 

starting in cold weather, and you should check your engine 

oil level frequently to avoid possible engine damage from 

running low on oil.
Change the oil after every 25 hours of operation or at least 

once a year if the lawn mower is not used for 25 hours in 

one year.
Check the crankcase oil level before starting the engine 

and after each five (5) hours of continuous use. Tighten oil 

plug securely each time you check the oil level.