The "Periodic Maintenance / Lubrication Intervals" schedule is taken directly from a 1986 edition Honda NQ50 Spree 50 Factory Service Manual, which covers the '84 - '87 models (other models should be similar).  Before starting any work, always consult the manual for your scooter's model & year and be sure you know what you're doing.
 

NQ50 Periodic Maintenance / Lubrication Intervals

I: Inspect    R: Replace    C: Clean    L: Lubricate   A: Adjust

Item

Remarks

Type

Pre-Ride Inspection

 1 month or 200 mi (300 km) Thereafter every
12 months or 1000 mi
(1500 km)

 Thereafter every
 24 months or 5,000 mi (8,000 km)
Oil pump and oil lines Service Manual page 2-2    

 I

  I

I
Throttle operation* Service Manual page 3-9  

I

   I I
Air cleaner element Service Manual page 3-5      Change every 6 months
Spark plug*

Service Manual page 3-8
0.6 - 0.7mm gap (0.024 - 0.028 in)

 NGK BPR6HS(BPR4HS, BPR8HS)     R R
Carburetor

Service Manual page 3-9

     I I I
Oil pump Service Manual page 2-2       I I
Fuel filter screen Service Manual page 3-6       C C
Fuel lines Service Manual page 3-6       I I
Oil & fuel level* Service Manual page 3-6  

I

      
Decarbonize cylinder head, Cylinder, piston and muffler Service Manual pages 6-4, 6-5         C
Transmission oil Service Manual page 3-6 SAE 10W30 motor oil   R   R
Final reduction case for leaks* Service Manual page 3-8  

I

      
Brake linings Service Manual page 3-10 Front & Rear DP9105     I I
Brake operation and free play* Service Manual page 3-10 YB4L-B, CB4L-B

I

I

 I I
All lights and horn Service Manual page 11-4 and 14-3  

I

      
Battery fluid specific gravity Service Manual page 14-3       I I
Battery fluid Level* Service Manual page 3-5 Distilled water

I

      
Clutch shoe wear Service Manual page 8-6      

 

I
Suspension operation Service Manual page 3-11      

I

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

I

 

I
Tires and tire pressure* Service Manual page 3-12

 18 psi Front
24 psi Rear
Front & Rear 2.50 x 10

I

 

  

 
Wheels and tires Check for trueness and cracks or damage       I I
Steering head bearings Service Manual page 3-12

Lithium based grease

  

I

  

I

* These items are simple to perform, and may be done by the owner.  Other maintenance 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.