Mercury 4.3 TKS series, Operation & Maintenance Manual

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Section 3 - Specifications
90-8M0113857
eng
DECEMBER 2015 Page 27
If Mercury/Quicksilver 25W‑40 Synthetic Blend Engine Oil is unavailable, use the following lubricants, listed in order of
recommendation.
1. Mercury/Quicksilver 25W‑40 Mineral NMMA FC‑W Catalyst Compatible.
IMPORTANT: If you are servicing a catalyst engine, use the following oils for short periods of time only.
2. Other recognized brands of NMMA FC‑W Catalyst Compatible rated 4‑cycle oil.
3. Other recognized brands of NMMA FC‑W rated 4‑cycle oils.
4. A good‑grade, straight‑weight detergent automotive oil according to the last row of the operating chart below.
NOTE: We do not recommend nondetergent oils, multi‑viscosity oils (other than as specified), non‑FC‑W rated synthetic oils,
low‑quality oils, or oils that contain solid additives.
Use the following information for selecting the type of oil according to the order of preference.
Mercury/Quicksilver 25W-40 Synthetic Blend, NMMA FC-W Catalyst Compatible rated 4-cycle oil
Other recognized brands of NMMA FC-W Catalyst Compatible rated 4-cycle oil
SAE 20W
SAE30W
SAE40W
AIR TEMPERATURE
ORDER OF PREFERENCE
(32° F)
0° C
(50° F)
10° C
Mercury/Quicksilver 25W-40 Mineral NMMA FC-W Catalyst Compatible rated 4-cycle oil
53574
Other recognized brands of NMMA FC-W rated 4-cycle oil
Engine Specifications
4.3 TKS
NOTE: Performance specifications are obtained and corrected in accordance with SAE J1228/ISO 8665 Crankshaft Power.
All measurements are taken with the engine at normal operating temperature.
RPM range is measured using an accurate service tachometer with the engine at normal operating temperatures.
Oil pressure must be checked with the engine at normal operating temperature.
NOTE: Oil pressure specifications are for reference and may vary.
IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.
Propshaft power
142 kW (190 hp)
Displacement
4.3 L (262 cid)
Alternator amperage
Hot 72 A
Cold 65 A
RPM
WOT 4400–4800
Rev limiter 4950
Idle in neutral 650
Minimum oil pressure
At 2000 RPM 124 kPa (18 psi)
At idle 28 kPa (4 psi)
Thermostat
Seawater‑cooled models
71° C (160° F)
Models with closed cooling
Timing at idle
10° BTDC
Firing order
1‑6‑5‑4‑3‑2
Minimum battery rating
375 CCA, 475 MCA, 90 Ah