Preventative Maintenance
The #1 reason for premature engine wear is overheating. To maintain engine performance,
insist upon genuine Sherwood impellers and service kits.
Pleasure Boating
Commercial/Fishing Use
Maintenance
(Low Hours)
(High Hours)
Schedule
Light Duty
Severe Duty
Heavy Duty
Severe Duty
(High RPM, Silt or Sand)
(High RPM, Silt or Sand)
Impeller Kit
Every year
6 months
6 months
3 months
Minor Kit
2 years
Every year
Every year
6 months
Major Kit
4 years
2 years
2 years
Every year
Impeller
Impeller
Minor
Minor
Minor
Minor
Minor
Major
Major
Major
Major
Major
Kit
Kit
Kit
Kit
Kit
Kit
Kit
Kit
Kit
Kit
Kit
Kit
17000K
27000K
23972
23973
24576
24578
24580
23974
23975
24577
24579
24581
P176X
X
X
X
P1710X
X
X
X
P1710A
X
X
X
P1716X
X
X
X
P1719X
X
X
X
P1722X
X
X
X
P1726X
X
X
X
P1727X
X
X
X
P1727A
X
X
X
P1730X
X
X
X
P1730A
X
X
X
P1731
X
X
X
P1732X
X
X
X
P1732A
X
X
X
P1733X
X
X
P2701X
X
X
X
5