Related Clues:

• No fused section is serviceable
• America can be functional
• Not entirely serious, a blemish - if something's this?
• Superior fur, not yet ready for being chucked out
• A mad dog can commit, and be pleased to help
• American president left in running
• States with processed fuel coming in handy
• Classy fur with a practical purpose
• Functional line penned by American President of yesteryear
• Co-operative may be compelling
• Like something functional setter and solver accomplished
• Operational
• Serving man wearing ring and jewellery is courteous
• Nifty wolf cub seen intermittently
• Forcing to be co-operative