BRP Johnson 4HP Service Manual page 15

Item
POWERHEAD
Recommended operating range
Idle speed
*Cylinder compression
(with decompression system)
Engine oil
BREAK-IN OIL
(FIRST 10 HOURS)
Engine oil amounts
Thermostat operating temperature
* Figures shown are guidelines only, not absolute service limits.
CARBURETOR
Type
I.D mark
Main jet
Pilot jet
Pilot screw
Float height
Unit
4 HP
r/min 4000 – 5000
r/min
2
kPa (kg/cm , psi)
or Viscosity rating 10W-40, API classification SE, SF, SG, SH, SJ
l (US/Imp. qt)
°C (°F)
KEIHIN BC19-3.5
91J80
#
#
Turns open
mm
GENERAL INFORMATION
Data
5 HP
4500 – 5500
1300 ± 50
(in-gear: approx: 1150)
550 – 650 (5.5 – 6.5; 78 – 92)
Ultra Four Stroke Oil
Evinrude/Johnson Four Stroke Oil
0.7 (0.74/0.62)
48 – 52 (118 – 126)
KEIHIN BC19-3.5
91J90
70
35
PRE-SET
10 ± 1
*SPECIFICATIONS
6 HP
4750 – 5750
1300 ± 50
(in-gear: approx: 1200)
KEIHIN BC21-15
91JB0
78
38
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