McCulloch MC550 Instruction De Maintenance

The warranty on this tiller does not cover items that  have 

been subjected to operator abuse or negligence.  To receive 

full value from the warranty, the operator must main tain 

tiller as instructed in this manual.
Some adjustments will need to be made periodically to 

properly maintain your tiller.
At least once a season, check to see if you should make 

any of the adjustments described in the Service and Ad-

justments section of this manual.
•  Once a year you should replace the spark plug, clean 

or replace air filter, and check tines and belts for wear.  

A new spark plug and clean air filter assure proper air-

fuel mixture and help your engine run better and last 

longer.

•  Check engine oil level.
•  Check tine operation.
•  Check for loose fasteners.

Keep unit well lubricated (See “LUBRICATION CHART”). 

FILL IN DATES
AS YOU COMPLETE
REGULAR SERVICE

Check Engine Oil Level

Change Engine Oil

Oil Pivot Points

Clean Air Cooling System

Inspect Spark Arrester / Muffler

Clean Air Filter

Clean Area Around Muffler And Controls

Replace Spark Plug

Replace Air Filter

BEFORE EA

CH USE

EVER

Y 8 HOURS

FIRST 5 HOURS

EVER

Y 25 HOURS OR ANNU

ALL

Y

EVER

Y 50 HOURS OR ANNU

ALL

Y

ANNU

ALL

Y

SERVICE DATES

1,2

2

2

3

1 - Change more often when operating under a heavy load or in high ambient temperatures.
2 - Service more often when operating in dirty or dusty conditions. 
3 - Initial oil change should be performed after first five (5) hours of operations.

c

d

d

c