4-9
E
EJU13550
Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, depend-
ing on your operating conditions maintenance may need to be performed more frequently.
PMC-F1B1() This mark indicates maintenance that you may do yourself.
(
❍) This mark indicates work to be done by a Yamaha dealer.
MAINTENANCE INTERVAL
INITIALTHEREAFTER
EVERYPA G E
10
hours50
hours100
hours100
hours200
hours
ITEM
6
months12
months12
months24
months
Spark plug Inspect, clean, adjust
4-15
Lubrication points Lubricate
4-17
Fuel system Inspect❍❍
4-10
Fuel tank Inspect, clean❍❍
4-10
Trolling speed Inspect❍❍
4-21
Throttle shaft Inspect❍❍
—
Cooling water passages Flush
*1 4-1
Water inlet strainer Inspect, clean❍❍
—
Bilge strainer Clean❍❍
—
Impeller Inspect❍❍
—
Jet thrust nozzle angle Inspect, adjust
/❍
/❍
4-13
Shift cable and mechanism
(VX110 Deluxe)Inspect, adjust
❍❍
4-13
Throttle cable Inspect, adjust❍❍❍
4-14
Stern drain plugs Inspect, replace❍❍
3-9
Battery Inspect ❍❍
4-19
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
Air filter Inspect, replace❍❍
4-13
Engine oil Replace❍❍❍
4-11
Engine oil filter Replace❍❍
—
Valve clearance Inspect, adjust❍
—
*1: After every use
UF1K70.book Page 9 Friday, November 19, 2004 2:42 PM
4-15
E
EJU21300
Cleaning and adjusting the
spark plugs
The spark plug is an important engine
component and is easy to inspect. The con-
dition of the spark plug can indicate some-
thing about the condition of the engine. For
example, if one spark plug shows a distinctly
different color, the engine could be defec-
tive. Do not attempt to diagnose any prob-
lems yourself. Have a Yamaha dealer
service the watercraft.
Remove and inspect the spark plugs peri-
odically; heat and deposits will cause the
spark plugs to slowly break down and erode.
If electrode erosion becomes excessive, or if
carbon and other deposits are excessive,
replace the spark plug with the specified
plug.
To remove a spark plug:
1. Remove the seat. (See page 2-5 for seat
removal and installation procedures.)
2. Remove the spark plug cap.
CAUTION:@ Do not use any tools to remove or install
the spark plug cap, otherwise the igni-
tion coil coupler may be damaged. The
spark plug cap may be difficult to remove
because the rubber seal on the end of
the cap fits tightly. To remove the spark
plug cap, simply twist it back and forth
while pulling it up; to install it, twist it
back and forth while pushing it down.
@
3. Remove the spark plug.Specified spark plug: NGK CR9EB
UF1K70.book Page 15 Friday, November 19, 2004 2:42 PM
