Yamaha Razz

Yamaha Razz SH50 Scooter
The Yamaha SH50 ( Razz/Mint) scooter has been around for a while(1986) and was sold up until recently (2001). The "Razz" (Riva Jazz) was a speed limited scooter and "go fast" parts aren't specifically manufactured for it as it had a chain drive which was not conducive to being "tuned" for higher speeds. If you wanted a faster scooter, the assumption was you'd just go and buy any other 50cc scooter on the market as odds are good you'd immediately notice a 5-10 mph improvement. Having said that, there are a lot of Yamaha Razzs where I live. Primarily they were bought by the "rental scooter" companies for tourists who wanted to sightsee and not be in a wild rush to go anywhere but to just take in the scenery. They were the cheapest scooters on the market so also attracted budget concious buyers like students who just wanted some basic economical, transport. The vast majority of used Razzs locally have a University parking sticker or "rental company" logo. The following chart contains info copied from a factory manual and gives some basic information and some maintenance info for the Yamaha SH50T.

Model code number	2FU
Engine type	Aircooled two stroke
Displacement	49.3 cc
bore x stroke	40.0 x 39.2 mm
compression ratio	6.3:1 (standard compression 71 psi; minimum compression 54 psi)
Engine oil	air cooled two stroke oil
Transmission oil	SAE 10W30 type SE motor oil
Engine Oil tank capacity	1.0 L
Transmission oil type capacity	0.75 L
Fuel capacity	4.4 L
Spark plug type and gap	NGK brand BPR6HS 1.0=1.1 mm ( 0.039~0.043 in )
Tires: Front Rear	2.50-10 ~ 18 psi 2.50-10 ~ 32 psi

Some Yamaha Razz links:

Taffspeed Scooter Tuning	Riding impressions	maintenance schedule
Daves's Razz Recusitation page	VT cycles performance parts

I recently acquired a Razz with cracked body panels, bad spray can paint job, duct-taped seat cover and bald tires. This scooter was owned by a student. After coming out of her part time job, she'd discovered that the scooter had been thrown into the ocean which was behind her place of employment. The scooter was then disassembled with the intention of being repaired. It eventually came to my workshop disassembled in boxes with the engine frozen. I'm not sure how fast this project will go but stay tuned for updates as they happen. I'll detail repair of cracked body parts, re-upholstery and rebuilding the scooter. If you know of any Razz/Mint websites or links please e-mail me so I can post them.

Doug Sept/2007

Links to my other Webpages

Main Index

Japanese scooter index

Honda scooter owners index

Scooter Graphics merchandise