TOHATSU NB-1000 Service Manual page 65

SECTION 3
2 3
Past production models 25, 30, and 40 contained an
internal guide plate (7) and spring (8) assemblies
under tension. The rubber diaphragm (9) that
required the guide plate and spring has been
replaced by a resin film (white opaque) diaphragm
(10) which no longer requires the guide plate and
spring.
4. Remove and discard all serviceable gaskets and diaphragms.
3
5. Remove aIl check valves (11) from pump body.
Cleaning
1. Clean aIl pump components with kerosene.
2. lf necessary, clean pump mounting surface on carburetor with
isopropyl alcohol. (for models 5, 8/9.8 and 9.9/15/18)
3. Dry all components with low pressure compressed air.
3-18
NOTE
T1119
T1120
1-/ 2-Cylinder