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1998 Yamaha SECA II Maintenance Schedule and Service Intervals

Maintenance schedule and service intervals for the 1998 Yamaha SECA II a.k.a Diversion

This is the maintenance schedule and associated service intervals for the 1998 Yamaha SECA II.

1998 Yamaha SECA II Maintenance Schedule

Below is the maintenance schedule for the 1998 Yamaha SECA II

The maintenance for the 1998 Yamaha SECA II is broken into two sections: periodic maintenance for emission control systems, and general maintenance and lubrication.

Periodic Maintenance Emission Control System

No.ItemRoutine1,000 km (600 mi) or 1 month7,000 km (4,400 mi) or 7 months13,000 km (8,200 mi) or 13 months19,000 km (12,00 mi) or 19 months25,000 km (15,800 mi) or 25 months31,000 km (19,600 mi) or 31 months
1*Valve Clearance• Check and adjust valve clearance when engine is cold.
2Spark Plugs• Check condition.
• Adjust gap and clean.
• Repalce at 13,000 km (or 13,000 months) and thereafter every 12,000 km (or 12 months).
ReplaceRepalce
3*Crankcase breather system• Check breather hose for cracks or damage.
• Repalce if necessary.
4*Fuel line• Check fuel hose and vacuum pipe.
• Replace if necessary.
5*Fuel filter• Repalce initial 31,000 km (19,600 mi) and thereafter every 30,000 km (19,00 mi).Replace
6*Exhaust system• Check for leakage.
• Retighten if necessary.
• Replace gaskets if necessary.
7*Carburetor Synchronization• Adjust synchronization of carburetors.
8*Idle speed• Check and adjust engine idle speed.
• Adjust cable free play.
9*Evaporative emission control system**• Check control system for damage.
• Replace if necessary.

* It is recommended that these items can be serviced by a Yamaha dealer or other qualified mechanic.

** For California type only

Note: For odometer readings or time periods higher than 31,000 km (19,600 mi) or 31 months repeat the same maintenance as listed in the table from the 7,000 km (4,400 mi) or 7 months every 6,000 km (3,800mi) or 6 month interval.

General Maintenance/Lubrication

No.ItemRoutineType1,000 km (600 mi) or 1 month7,000 km (4,400 mi) or 7 months13,000 km (8,200 mi) or 13 months19,000 km (12,00 mi) or 19 months25,000 km (15,800 mi) or 25 months31,000 km (19,600 mi) or 31 months
1Engine filter• Warm-up engine
before draining.
*1) YAMALUBE 4 (20W40) or SAE 20W40 type “SE” motor oil
*2) YAMALUBE 4 (10W30) or SAE 10W30 type “SE” motor oil
2*Oil filter• Replace
3*Air filter• Clean with compressed air.
• Replace if necessary.
4*Brake system• Check brake system.
• Replace pads if necessary.
5Clutch• Adjust free play.
6*Drive chain• Check chain condition.
• Adjust and lubricate chain thoroughly.
SAE 30W-50W motor oilEvery 1,000 km (600 mi) and after washing the motorcycle or riding in the rain.
7*Control and meter cable• Apply chain lube thoroughly.Yamaha chain and cable lube or SAE 10W30 motor oil
8Rear arm pivot shaft• Apply grease lightly.Molybdenum disulfide grease
9Brake/Clutch lever pivot shaft• Apply chain lube lightly.Yamaha chain and cable lube or SAE 10W30 motor oil
10*Brake pedal and shift pedal shaft• Lubricate.
• Apply chain lube lightly.
Yamaha chain and cable lube or SAE 10W30 motor oil
11*Sidestand pivot• Check operation and lubricate.
• Apply chain lube lightly.
Yamaha chain and cable lube or SAE 10W30 motor oil
12*Front fork• Check operation and leakage.
13*Steering bearings• Check bearings assembly for looseness.
• Moderately repack every 24,000 km (15,200 mi).
Lithium soap base.Repack
14*Wheel bearings• Check bearings for smooth rotation.
15*Sidestand switch• Check and clean or replace if necessary.

*1) If ambient temperature does not go below 5°C/40°F.

*2) If ambient temperature does not go above 15°C/60°F.

* It is recommended that these items can be serviced by a Yamaha dealer or other qualified mechanic.

Note:

• The air filter needs more frequent service if you are riding in unusually wet or dusty areas.

•For odometer readings or time periods higher than 31,000 km (19,600 mi) or 31 months repeat the same maintenance as listed in the table from the 7,000 km (4,400 mi) or 7 months every 6,000 km (3,800 mi) or 6 month interval.

•Brake fluid replacement:

1. When disassembling the master cylinder or caliper cylinder, always replace the brake fluid. Check the brake fluid level regularly and fill as required.

2. Replace the oil seals on the inner parts of the master cylinder and caliper cylinder every two years.

3. Replace the brake hoses every four years or if cracked of damaged.

About the 1998 Yamaha SECA II

The in-line four was essentially a new engine, if based on old designs. Sporting a pair of overhead camshafts and a 10:1 compression ratio, some 45 horsepower at 8,200 rpm would be turning the rear wheel. And 35 lb-ft of torque at 6,200 rpm. A quartet of 26mm Mikuni constant-velocity carburetors fed the combustion chambers, and while ridden hard the consumption might drop to 40 mpg, the average was more like 50 mpg. Which meant that the 4.6-gallon tank could run the bike well over 200 miles. Sensible types would look for a gas station after the bike went on manual reserve.

Manual for the 1998 Yamaha SECA II

1998 Yamaha SECA II Maintenance schedule screenshot from manual

The above information was gleaned from the owner’s manual for the 1998 Yamaha SECA II.

You can download it from Yamaha’s website here.