REGULAR MAINTENANCE
Maintenance, replacement or repair of emission control devices and systems may be performed by any
repair establishment or individual; however, warranty repairs must be performed by a dealer or service
center authorized by Maruyama Manufacturing Company, Inc. The use of parts that are not equivalent in
performance and durability to authorized parts may impair the effectiveness of the emission control
system and may have a bearing on the outcome of a warranty claim.
• Switch off the engine before sharpening the saw chain.
• Always wear gloves when working on saw chain.
• When replacing guide bar or saw chain, Use appropriate low kickback type.
• Never modify a chain saw in any way. Although certain unauthorized attachments are useable
with the chain saw, their use may, in fact, be extremely dangerous.
AIR FILTER
Maintenance Interval
• The air filter should be cleaned daily, or more often when working in extremely dusty conditions.
• Replace after every 100 hours of operation.
Air Filter Cleaning
1. Remove the Cleaner cover from the chain saw.
2. Remove the element from the Cleaner cover.
3. Brush off dust on the element or blow off dust with
compressed air.
4. Reassemble the element and Cleaner cover.
CHAIN CASE
Maintenance Interval
• The chain case should be cleaned daily, or more often
when working in extremely dusty conditions.
• When chain brake does not function properly, should be
cleaned.
• Clean the bar mount area before mounting of the chain
case.
IMPORTANT: After clean, if the chain brake does not func-
tion properly, take the saw to your local
Service Center.
WARNING
k
— US-37 —
Remove the
Cleaner cover
Element