MAINTENANCE
SERVICE INTERVALS
The following servicing tasks should be carried out on the machine at the stated running-time intervals.
No. Items
Indication hour meter (hr)
Ref.
page
8 25 50 100 150 200 250 300 350 400 450 500 550 600 After since
1 Engine oil Change ◎ ○ ○ ○ ○ ○ ○ every 100 hr 60
*1
2
Cylinder and cylinder head
fins
Clean ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 25 hr 56
3 Air cleaner
Foam element Clean ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 25 hr 57
*2
Paper element
Clean ○ ○ ○ ○ ○ ○ every 100 hr 61
*2
Replace ○ ○ ○
every 200 hr
or 1 year
65
*2
4 Engine start system Check ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 50 hr 58
5 OPC system Check ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 50 hr 59
6 Front wheel, seat adjuster Greasing ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 50 hr 60
7 Carbon canister air filter
Check ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ every 50 hr 59
Replace
every 2
years
69
8
Muffler and spark arrester
(if equipped)
Check ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
every 50 hr
or 1 year
60,
69
9 Fuel filter
Check ○ ○ ○ ○ ○ ○ every 100 hr 62
Replace ○ ○ ○ every 200 hr 65
*K
10 Battery condition Check ○ ○ ○ ○ ○ ○ every 100 hr 63
11 Throttle cable Adjust ○ ○ ○ ○ ○ ○ every 100 hr 64
12 Choke cable Adjust ○ ○ ○ ○ ○ ○ every 100 hr 64
13 Mower link bushings Greasing ○ ○ ○ ○ ○ ○ every 100 hr 65
14 Spark plug
Check ○ ○ ○ ○ ○ ○ every 100 hr 61
Replace ○ every 500 hr 67
15 Engine oil filter Replace ○ ○ ○ every 200 hr 65
16 Engine valve clearance Adjust ○ ○ every 300 hr 66
*K
17
Combustion chamber, valve
seating surface
Clean, lap ○ ○ every 300 hr 66
*K
18 Transaxle oil filter Replace ◎ ○ every 400 hr 66
*3
19 Transaxle fluid Change ◎ ○ every 400 hr 67
*3
20 Crankshaft
Lubricat-
ing
○ every 500 hr 68
21 Electric clutch Adjust ○
every 500 hr
or 1 year
68
*4
22 Fuel line
Check every 1 year 69
*5
Replace
every 4
years
70
*K
23 Hydraulic hose
Check every 1 year 69
*5
Replace
every 4
years
70
*K
(Continued)
MAINTENANCE SERVICE INTERVALS
Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT