Selection; Predelivery Checks; Checking The Fuel System; Checking The Engine Oil Level - Yamaha F80B Service Manual

Selection

When the engine speed is at the full throttle
operating range (5,000–6,000 r/min), the
ideal propeller for the boat is one that pro-
vides maximum performance in relation to
boat speed and fuel consumption.
Propeller size (in)
12 5/8 × 21 - K
13 × 19 - K
13 × 23 - K
13 × 25 - K
13 1/4 × 17 - K
13 1/2 × 15 - K
13 5/8 × 13 - K
14 × 11 - K
13 × 17 - K
13 × 19 - K
13 × 21 - K
13 × 23 - K
13 × 25 - K
13 1/2 × 14 - K
13 1/2 × 16 - K

Predelivery checks

To make the delivery process smooth and
efficient, the predelivery checks should be
completed as explained below.

Checking the fuel system

1. Check that the fuel hoses are securely
connected and that the fuel tank is full
with fuel.
6D93G11
Identification / Propeller selection / Predelivery checks
Material
Aluminum
Stainless
1
CAUTION:
This is a 4-stroke engine. Never use pre-
mixed fuel.

Checking the engine oil level

1. Check the engine oil level.
a
b
NOTE:
If the engine oil is below the minimum level
mark b, add sufficient oil until the level is
between a and b.
Recommended engine oil:
4-stroke motor oil
API: SE, SF, SG, SH, or SJ
SAE: 10W-30 or 10W-40
Engine oil quantity:
Without oil filter replacement:
4.3 L (4.55 US qt, 3.78 Imp qt)
1
2
3
S6D81020
4
5
6
7
S60C1150
8
9
1-6