The "Periodic Maintenance / Lubrication Intervals" schedule is taken directly from the 1984 edition Honda NH125 Factory Service Manual. Before starting any work, always consult the manual for your scooter's model & year and be sure you know what you're doing.

NH125 Periodic Maintenance / Lubrication Intervals

 R: Replace    C: Clean    L: Lubricate   I: Inspect, adjust if necessary

Item

Remarks

Type

 600 mi (1000 km) 2,500 mi
(4,000 km)		 Thereafter every
5,000 mi (8,000 km)		 Thereafter every
7,500 mi (12,000 km)
Fuel Lines* Service Manual page 3-3     I I I
Fuel filter* Service Manual page 3-3         R
Throttle operation* Service Manual page 3-3   I I I I
Air cleaner Service Manual page 3-4 Service more frequently in wet or dusty areas   C C C
Spark plug 0.024 - 0.028" (0.6 - 0.7mm) gap NGK BPR6HS   R R R
Oil pump* Service Manual page 2-2 Use only 2 stroke injector oil I I I I
Engine oil lines Service Manual page 3-6     I I I
Engine oil strainer* Service Manual page 3-6       C  
Muffler decarbonization* Service Manual page 3-7         C
Carburetor, idle speed* Service Manual page 3-7 1800 rpm
+/- 100 rpm		 I I I I
Drive belt* Service Manual page 3-13       I  
Transmission oil* Service Manual page 2-5 90cc (3.0 oz) SAE 10W30 motor oil Replace every two years
Battery Add distilled water when necessary YB5L-B, CB5L-B I I I I
Brake shoe wear Service Manual page 3-8 Front & Rear: DP9100, EBC303   I I I
Brake system Service Manual page 3-9   I

 I I I
Brake lock lever* Service Manual page 3-10   I

 I I I
Starter limit switch* Service Manual page 3-11 Lithium based grease I I I I
Brake light switch* Service Manual page 3-11   I I I I
Headlight aim* Service Manual page 3-11   I I I I
Suspension* Service Manual page 3-11   I I I

 I
Nuts, bolts, fasteners* Service Manual page 3-12   I

 I I I
Clutch shoe wear* Service Manual page 8-14     I I I
Wheels* Service Manual page 3-12 Front 21 psi, Rear 28 (36 psi max)
Tires: 3.50 x 10		 I I I I
Steering Head bearings* Service Manual page 3-13

Lithium based grease

 I     I

* These items should be serviced by an authorized Honda dealer, unless the owner has the proper tools, service data and mechanical knowledge to do the work.